Inbounds Violation (Video)

[ccrroo]

I'm looking for the high school rule that defines this violation.

White team scores.
Red teams is trying to inbound the ball.
Red team steps across the baseline but not in the act of passing.
Ref calls violation for stepping across baseline.

Even have video: http://youtu.be/GNAYuKt-wbY



I understand the call if this is a dead ball in-bounds play. I don't understand it on an in-bounds after a made bucket. After a made basketball, it seems like the in-bounding team could walk back forth across the baseline as many times as they want within their 5 second limit to inbound the ball. But when they do throw the ball in, they have to be behind the line.

On TV, I've seen guys start to throw the ball in while glancing down to see their foot on the line. They stop their progress of throwing the ball in and back up an start over.